Full Notification

This is an advisory message from Alameda County. The National Weather Service in San Francisco has issued a Red Flag Warning, which is in effect from 4 AM Wednesday to 7 PM Thursday due to high winds and dry conditions. The East Bay Hills have been identified as an area of particular concern. 

From the National Weather Service: 

Offshore winds are forecast to develop across the higher elevations of the North Bay and East Bay beginning late Tuesday night, and continuing during the day on Wednesday. These offshore winds in combination with low relative humidity values will lead to critical fire weather conditions. Additionally, poor overnight relative humidity recoveries are expected Wednesday night and into Thursday morning as a result of the continued offshore winds.

Definition of a Red Flag Warning:

A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior.